Electric generator and motor.



C. T. HIBBARD.

ELEGTBIG GENERATOR ANDMOTOR.

/A/z/f'A/faf m4419155 Timun/wmf@ CHARLES TRUMAN HIBBARD, OF MINNEAPOLIS, MINNESOTA, .ASSIGNOR TO ELECTRIC MACHINERY COMPANY, 0F MINNEAFOLIS,

MINNESOTA.

To all whom it may concern:

Be it known that I, CHARLES TRUMAN HIBBARD, of Minneapolis, Hennepin county, Minnesota, have invented certain new'and v useful Improvements in Electric Generators and Motors, of which the following is a specification.

The object of my invention, is to provide improved means for and reduce the cost of securing the pole pieces of a generator or motor to the field spider or ring to the end that the pole pieces will be securely held, but be capable of convenient separat-ion from the spider for examination or repairs.

'My invention consists generally in providing the pole pieces with tongues fitting within sockets in the ield spider and wedges for locking saidtongues therein.

In the accompanying drawings `forming part of this specification, Figure 1, is an edge view rpartially in section of a generator spider'illustrating the manner of mounting the pole pieces thereon. Fig. 2, is a side view of a portion of the same, Fig. 3, is a sectional view illustrating a slightly inediied construction. Fig. a, is a sectional view on the line of Fig. 3.

In thedrawing, 9. represents the generator shaft and 3 the field spider keyed thereon and provided with a peripheral rim 4. The pole pieces are seated on this rim and consist of a series of thin plates or laminas 'held together between side plates by rivets 7 passing therethrough.

8 represents the field coil windings of the pole pieces. To hold the pole pieces securely in place on the spider and at the same time permit their removal whenever desired, I provide sockets 9 in the rim 4f and form tongues 10 on a series of the plates 5 to it within said sockets, said tongues having holes 11 therethrough adapted to receive Wedges 12, having edges which bear on the tapering inner 'surface of the rim and draw the pole pieces down snugly against the periphery of the rim. The Wedges are provided With notches 13 therein and flat plates 1a fit into the holes 11 and have ends turned outwardly to enter the notches 13 and when adjusted, the opposite ends of the plates are turned inwardly to lock them in the holes in the tongue and preventthe accidental disengagement of the wedges.

In Fig. 3, a modified construction is shown Specification of Letters Patent.

Application led July 24, 1908.

MINNESOTA, A CORPORATION OF ELECTRIC GENERATOR AND MOTOR.

Patented May 1o, i910.

Serial N0. 445,148.

in which the spider 15 has its web located at one side of the center and is provided with a central socket 16 for a single tongue 17 formed onthe pole pieces. It will be noted, that only a portion of the pole piece lamina is provided with tongues, those lacking the tongues being securely fastened to those having them by means of the transverse rivets described.

I claim as my invention:

1. In an electric generator or motor, the combination, with a field spider having a solid peripheral rim, and a radial oriiice therethrough, of a pole piece having a laminated tongue formed integrally with said pole pieceand fitting within and passing through said radial orifice, a wedge fitting within a hole in said tongue and adapted to bear on the inside or' said rim and draw the pole piece snugly against the periphery thereof', substantially as described.

2. In an electric generator or motor, the combination, with a eld spider having a solid peripheral rim, and a radial orifice therethrough, of a pole piece having a laminated tongue fitting within and passing through said radial orifice, a wedge :fitting within the hole in said tongue, and means for locking said wedge in said hole, substantially as described.

3. In an electric generator or motor, the combination, with a iield spider, having a solid peripheral rim provided with a series of radial orifices therethrough, of pole pieces having laminated tongues litting within and passing through said radial orices and capable of independent insertion and removal, and means inside the rim for locking said tongues in said radial orifices.

et. In an electric generator, or motor, the combination, with a field spider having a solid peripheral rim provided with a series of radial orifices, of pole pieces having laminated tongues fitting within and passing through said radial orifices, wedges fitting within holes in said tongues and having a notch near one end and a plate also fitting within the hole in said tongue and having one end adapted toenter the notch in said wedge and its other end adapted to be bent at an angle to the middle portion of the plate, substantially as described.

5. In an electric generator or motor, the combination, with a field spider having a Solid porpheral rim provided with a series of radial oroes Lherethrouggjh7 of pole pieces composed of :L series of lamina@ seated on said rim, Some of the said. lamn boing longer than others and forming laminated tongues which rt Within and project through the radial orifices in said .rim and said pro jeoton of said tongues having holes therethrough and Wedges ttirrg Within said holas and looking said tongues in said openings. 1:3

En Wness whereof7 E have horounto sot my hand this 14 day of ulg! 1908.

ARLES TRUMAN H'LBBRD.

) RICHARD PAUL,

l J. A. BYINGTON. 

